<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button
            type="primary"
            size="small"
            @click="hAdd(1, '0')"
          >添加权限</el-button>
        </div>
        <el-table :data="permissions" row-key="id" default-expand-all border>
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template v-slot="{ row }">
              <el-button
                v-if="row.type === 1"
                type="text"
                @click="hAdd(2, row.id)"
              >添加</el-button>
              <el-button type="text" @click="hEdit(row.id)">编辑</el-button>
              <el-button type="text" @click="hDel(row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>
    <el-dialog
      :visible.sync="showDialog"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :title="isEdit ? '编辑' : '添加'"
      @closed="hClose"
    >
      <!-- 表单内容 -->
      <el-form ref="form" label-width="100px" :model="formData" :rules="rules">
        <el-form-item label="权限名称" prop="name">
          <el-input v-model="formData.name" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model="formData.code" />
        </el-form-item>
        <el-form-item label="权限描述">
          <el-input v-model="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="启用"
            active-value="1"
            inactive-text="不启用"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script>
import {
  addPermission,
  delPermission,
  getPermissionDetail,
  getPermissionsList,
  updatePermission
} from '@/api/permissions'
import { tranListToTreeData } from '@/utils'
export default {
  data() {
    const validateCode = (rule, value, callback) => {
      // code不能重复
      let codeList = this.permissions
      if (this.isEdit) {
        codeList = this.permissions
          .filter((item) => item.id !== this.formData.id)
          .map(({ code }) => code)
      }
      codeList.includes(value) ? callback(new Error(value + '已存在')) : callback()
    }

    const validateName = (rule, value, callback) => {
      let nameList = this.permissions
        .filter((item) => item.pid === this.formData.pid)
        .map(({ name }) => name)
      if (this.isEdit) {
        nameList = this.permissions
          .filter((item) => item.pid === this.formData.pid && item.id !== this.formData.id)
          .map(({ name }) => name)
      }
      nameList.includes(value) ? callback(new Error(value + '已存在')) : callback()
    }
    return {
      permissions: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      isEdit: false,
      rules: {
        code: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validateCode, trigger: 'blur' }
        ],
        name: [
          { message: '不能为空', required: true, trigger: 'blur' },
          { validator: validateName, trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.loadPermissions()
  },
  methods: {
    async loadPermissions() {
      const res = await getPermissionsList()
      // console.log(res)
      this.permissions = res.data.map(({ id, pid, name, code }) => ({
        id,
        pid,
        name: name.trim(),
        code
      }))
      console.log(this.permissions)
      this.permissions = tranListToTreeData(res.data)
    },
    hAdd(type, pid) {
      // 状态
      this.isEdit = false
      // console.log(type, pid)
      this.formData.type = type
      this.formData.pid = pid
      this.showDialog = true
    },
    async hSubmit() {
      // 兜底验证
      const valid = await this.$refs.form.validate().catch((e) => e)
      if (!valid) return
      try {
        let res = null
        if (this.isEdit) {
          res = await updatePermission(this.formData)
        } else {
          // 发发请求
          res = await addPermission(this.formData)
        }
        // 提醒用户
        this.$message.success(res.message)
        // 关闭dialog
        this.showDialog = false
        this.loadPermissions()
      } catch (e) {
        this.$message.error(e.message)
      }
    },
    hClose() {
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      // 清楚验证
      this.$refs.form.clearValidate()
    },
    async hDel(id) {
      const result = await this.$confirm('确定要删除码？', '提示', {
        type: 'warning'
      }).catch((e) => e)
      if (!result === 'confirm') return
      try {
        // 发请求
        const res = await delPermission(id)
        // 提醒用户
        this.$message.success(res.message)
        // 重新渲染
        this.loadPermissions()
      } catch (e) {
        this.$message.error(e.message)
      }
    },
    async hEdit(id) {
      this.isEdit = true
      const res = await getPermissionDetail(id)
      this.formData = res.data
      this.showDialog = true
    }
  }
}
</script>
